<?php
class Technician extends Worker {
	private $diploma;
	
	public function __construct($name, $salary, $age, $diploma){
		parent::__construct($name, $salary, $age);
// 		$this->name		= $name;
// 		$this->salary 	= $salary;
// 		$this->age    	= $age;
		$this->diploma	= $diploma;
	}
	public function getDiploma() {
		return $this->diploma;
	}
	public function setDiploma($x) {
		$this->diploma = $x;
	}
	
	public function repairing() {
		$a = parent::working();
		return $a." ".$this->name." is repairing!";
	}
	
	public function move($km){
		return $this->name." is walking on foot for".$km."km!";
	}
}